Valve for controlling fluids.



No. 829,120. PATENTED AUG. 21', 1906. G. A. MUMFOIRD. VALVE FORCONTROLLING FLUIDS.

APPLICATION II-LED JUNE 21, 1905.

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djwim N0- 829,l20. PATENTED AUG. 21, 1906. G. A. MUMFORD. VALVE FORCONTROLLING FLUIDS.

APPLICATION FILED-JUNE 21, 1905.

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UNITED STATES PATENT orrron.

GEORGE A. MUMFORD, OF ROCHESTER, NEW YORK.

VALVE FOR CONTROLLING FLUIDS.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed June 21,1905. Serial No. 266,275.

To all whom it may concern:

Be it known that I, GEORGE A. MUMFORD, of Rochester, in the county ofMonroe and State of New York, have invented a new and useful Improvementin Valves for Controlling Fluids, which improvement is fully set forthin the following specification and shown in the accompanying drawings.

My present invention relates generally to the conducting of liquids orfluids through pipes, as in hot-water circulation, &c., but moreparticularly to the valves controlling the flow of such liquids orfluids, the invention being a three-way piston-valve designed as animprovement on the valves shown and set forth in Letters Patents Nos.637,010 and 667,553, of dates November 14, 1899, and February 5, 1901,respectively.

One object of my present invention is to provide a double-actingflat-disk valve for controlling passages for liquids or fluids leadingin opposite directions.

Another object of the invention is to provide better means thanheretofore employed for moving the valve proper against one or the otherof the opposing valve-seats.

Other objects and advantages of the invention will be brought out andmade to appear in the following specification and the constructionparticularly pointed out in the appended claims, reference being had tothe accompanying drawings, which, with the reference characters markedthereon, form a part of this specification.

In the drawings, Figure 1 is a side view of the body of the valvedisconnected, the lever being omitted Fig. 2 is a view of the same seenas indicated by arrow2 in Fig. 1. Fig. 3 is a view of the body seen asindicated by arrow 3 in Fig. 1. Fig. 4 is an end view of the bodyindicated by arrow 4 in Fig. 1. Fig. 5 is a plan of the lever-spindle,detached. Fig. 6 is a central longitudinal section of the hollow bodyand the closing-cap on the dotted line 6 6 in Fig. 4, showing theinterior parts, parts being shown in various positions by full and bydotted lines. Fig. 7 is a transverse section of parts taken on thedotted lines 7 7 in Figs. 1 and 6. Fig. 8 is a side elevation of thevalve proper, detached, seen as indicated by arrow 8 in Fig. 6. Figs. 5to 8, inclusive, are drawn to scales slightly larger than that of theremaining figures.

Referring to the parts shown, A in the various figures is the main partor body of the valve, it being a cylindrical metal shell or inclosingbody, as of brass, for the valve proper, B, one end of the body A beingfully open. C is a cylindrical cap for the open end of the body A,formed with a short tubular part a and threaded in the open end of thebody A, as appears in Fig. 6. The opposite end of the bodyA is withoutremovable parts and formed with a longitudinal tubular part b,corresponding with the part a of the cap C, said two tubular parts beingcoaxial with themain part or body A. These tubular parts extend inopposite directions away from the body A and constitute outflow-passagesfrom said body, the inflow-passage being through a short tubular part 00at the side of the body.

.The parts a and b are threaded externally at their outer ends for thepurpose of coupling onto adjacent pipes in the usual manner, the part asbeing internally threaded for a like purpose. The cylindrical openingsthrough theparts a and b are uniform in diameter, the circular walls ofsaid openings terminating at their inner ends in inwardly-proj ectingvalveseats 0 c, facing toward each other.

The valve B, Figs. 6, 7, and 8, is formed with a pair ofoppositely-turned hollow cylindrical heads (1 d, holding rings e e, asof hard rubber, in positions to meet the respec tive valve-seats c c asthe valve B is given longitudinal motion within the shell or body A. Theheads d d are connected by a longitudinal tie or member f, which,,withthe two heads (1 d, constitutes a single rigid body D, with the valvesurfaces or disks of the rings 6 e turned in opposite directions. Thebody D of the valve is formed with axial openings g g, Fig. 8, at itsends, in which to receive Winged stems E E, which stems when the valve Bis inplace within the body A occupy the respective cylindrical cavitiesof the two tubular parts a b, as shown, and in which the valve haslongitudinal motion. The stems E E hold to place in the part D bythreaded portions h h, and when thus in place the flanges "l 'L of thestems press the respective rubber rings 6 e. The valve is provided withflanges bearing against the rings and out of contact with the walls ofthe recesses in the heads, as shown.

, The valve B is formed with .a rectangular opening 7c, Figs. 7 and 8,through the body D, in which to receive the free end of anoperating-armF, (see also Fig. 6,) the opposite end of the arm occupyinga vertical chamber 1 in a laterally-projecting longitudinally-disposedpart m at the side of the body A, Figs. 1, 3, 4, 6, and 7. The part m isformed at one side with a short tubular lateral projection 70, openinginto the chamber Z, (see Fig. 7,) threaded at its outer end to receive ascrewcap 0, the axis of the part n being at right angles with a planecoinciding with the axis of the body A. Aspindle G, Figs. 1 to 5 and 7,is placed in the tubular part a to cross the chamber 1, having a squaredportion 1" to occupy a rectangular opening 8, Fig. 6, in the arm F, bymeans of which when the spindle is turned one way or the other on itsaxis the valve B will be given corresponding longitudinal motions in thebody A. The distance between the outwardly-turned faces of the rings 0 cof the valve is less than the distance between the opposing valve-seatsc c, and the above-mentioned longitudinal motions of the valve B serveto bring one or the other of the rings against its coacting valve-seat,and so temporarily close the outward passage through the tubular part aor b, as the case may be. The spindle G has a bearing in a shortprojection 19 of the part m, Fig. 7, beyond the chamber 1, and it isformed with a flange tin an enlarged chamber to of the tubular part it,said annular chamber serving as a stuffing-box for holding some ordinarypacking material for the spindle. A follower vis provided for pressingthe packing material against the flange t, the follower being pressedinward by the screw-cap 0. The spindle G is further formed with a squarepart to near its outer end for receiving a weighted actuating-lever H,Figs. 2 and 3, for turning the spindle to control the valve B. Thislever H is flexible and elastic and of the nature of a spring, so as tocause the valve to meet and press the respective valve-seats withyielding action. This doubleacting three-way valve is useful forcontrolling the flow through pipes of hot or cold water, steam, or otherfluids, and in use it may occupy any position in which the spindle G ishorizontal. Commonly the position of the body A is such that the inflowthrough the passage 90 is in an upward direction; but this is whollyimmaterial to the invention. In Whatever position the body A may be theweighted lever H is so relatively disposed as to cause the valve B tonormally close either outflow-opening from the body A, as may bedesired.

What I claim as my invention, and desire to secure by Letters Patent, is

1. A valve for controlling fluids, comprising a cylindrical inclosingbody with integral lateral chamber, a cap for the opening at one end ofsaid body, said cap and body having equal oppositely-extending tubularparts coaxial with the body, said tubular parts terminating invalve-seats at their inner ends within said body, a.longitudinally-movable valve in said body having oppositely-turnedheads, said heads having cylindrical recesses, elastic rings in saidrecesses and extended beyond the outer faces of said head in positionsto meet said respective valve seats and means for moving the valvelongitudinally of said body, said valve having guiding means at oppositeends received in said tubular parts and provided with flanges bearingagainst said rings and out of contact with the walls of the recessesin-said heads.

2. A valve for controlling fluids, comprising a cylindrical inclosingbody with integral lateral chamber, a cap for the opening at one end ofsaid body, said cap and body having equal oppositely-extending tubularparts coaxial with the body, said tubular parts terminating invalve-seats at their inner ends within said body, alongitudinally-movable valve in said body having oppositely-turnedheads, said heads having cylindrical recesses, elastic rings in saidrecesses and extended beyond the outer faces of said head in positionsto meet said respective valve-seats and means for moving the valvelongitudinally of said body, said valve having guiding means at oppositeends received in said tubular parts and provided with flanges bearingagainst said rings and out of contact with the walls of the recesses insaid heads, said operating means being supported in said chamber andhaving its free end loosely received in the valve-stem of said body.

In witness whereof I have hereunto set my hand, this 1 6th day of June,1 905, in the presence of two subscribing witnesses.

GEORGE A. MUMFORD. Witnesses:

ENos B. WI-IITMORE, A. M. WI-IITMORE.

